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C++ OpArg::Imm32方法代码示例

本文整理汇总了C++中OpArg::Imm32方法的典型用法代码示例。如果您正苦于以下问题:C++ OpArg::Imm32方法的具体用法?C++ OpArg::Imm32怎么用?C++ OpArg::Imm32使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在OpArg的用法示例。


在下文中一共展示了OpArg::Imm32方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: UnsafeLoadToReg

bool EmuCodeBlock::UnsafeLoadToReg(X64Reg reg_value, OpArg opAddress, int accessSize, s32 offset,
                                   bool signExtend, MovInfo* info)
{
  bool offsetAddedToAddress = false;
  OpArg memOperand;
  if (opAddress.IsSimpleReg())
  {
    // Deal with potential wraparound.  (This is just a heuristic, and it would
    // be more correct to actually mirror the first page at the end, but the
    // only case where it probably actually matters is JitIL turning adds into
    // offsets with the wrong sign, so whatever.  Since the original code
    // *could* try to wrap an address around, however, this is the correct
    // place to address the issue.)
    if ((u32)offset >= 0x1000)
    {
      // This method can potentially clobber the address if it shares a register
      // with the load target. In this case we can just subtract offset from the
      // register (see Jit64Base for this implementation).
      offsetAddedToAddress = (reg_value == opAddress.GetSimpleReg());

      LEA(32, reg_value, MDisp(opAddress.GetSimpleReg(), offset));
      opAddress = R(reg_value);
      offset = 0;
    }
    memOperand = MComplex(RMEM, opAddress.GetSimpleReg(), SCALE_1, offset);
  }
  else if (opAddress.IsImm())
  {
    MOV(32, R(reg_value), Imm32((u32)(opAddress.Imm32() + offset)));
    memOperand = MRegSum(RMEM, reg_value);
  }
  else
  {
    MOV(32, R(reg_value), opAddress);
    memOperand = MComplex(RMEM, reg_value, SCALE_1, offset);
  }

  LoadAndSwap(accessSize, reg_value, memOperand, signExtend, info);
  return offsetAddedToAddress;
}
开发者ID:MerryMage,项目名称:dolphin,代码行数:40,代码来源:EmuCodeBlock.cpp


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